CN111635438A - Preparation method and application of polyaryl alkyl modified binuclear platinum (II) complex - Google Patents
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- HRGDZIGMBDGFTC-UHFFFAOYSA-N platinum(2+) Chemical compound [Pt+2] HRGDZIGMBDGFTC-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 125000000217 alkyl group Chemical group 0.000 title description 4
- 210000003411 telomere Anatomy 0.000 claims abstract description 23
- 108091035539 telomere Proteins 0.000 claims abstract description 23
- 102000055501 telomere Human genes 0.000 claims abstract description 23
- 108091081406 G-quadruplex Proteins 0.000 claims abstract description 19
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 claims abstract description 15
- 239000002246 antineoplastic agent Substances 0.000 claims abstract description 9
- 229940041181 antineoplastic drug Drugs 0.000 claims abstract description 9
- 239000011541 reaction mixture Substances 0.000 claims abstract description 5
- 230000006698 induction Effects 0.000 claims abstract description 4
- 230000006641 stabilisation Effects 0.000 claims abstract description 4
- 238000011105 stabilization Methods 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 20
- 239000003446 ligand Substances 0.000 claims description 14
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(I) nitrate Inorganic materials [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 239000003814 drug Substances 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 239000012752 auxiliary agent Substances 0.000 claims 1
- 238000006298 dechlorination reaction Methods 0.000 claims 1
- 230000001939 inductive effect Effects 0.000 claims 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract description 11
- 238000002844 melting Methods 0.000 abstract description 9
- 230000008018 melting Effects 0.000 abstract description 9
- 238000011160 research Methods 0.000 abstract description 7
- 229910052697 platinum Inorganic materials 0.000 abstract description 4
- 239000000243 solution Substances 0.000 description 12
- 108020004414 DNA Proteins 0.000 description 9
- 238000002866 fluorescence resonance energy transfer Methods 0.000 description 9
- 108700039691 Genetic Promoter Regions Proteins 0.000 description 7
- 102100021569 Apoptosis regulator Bcl-2 Human genes 0.000 description 6
- 101000971171 Homo sapiens Apoptosis regulator Bcl-2 Proteins 0.000 description 6
- 101710135898 Myc proto-oncogene protein Proteins 0.000 description 6
- 102100038895 Myc proto-oncogene protein Human genes 0.000 description 6
- 102000016971 Proto-Oncogene Proteins c-kit Human genes 0.000 description 6
- 108010014608 Proto-Oncogene Proteins c-kit Proteins 0.000 description 6
- 101710150448 Transcriptional regulator Myc Proteins 0.000 description 6
- 108010017842 Telomerase Proteins 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000001338 self-assembly Methods 0.000 description 5
- 210000004881 tumor cell Anatomy 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 4
- 230000003993 interaction Effects 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 125000001424 substituent group Chemical group 0.000 description 4
- 229910017673 NH4PF6 Inorganic materials 0.000 description 3
- 230000000259 anti-tumor effect Effects 0.000 description 3
- 239000007853 buffer solution Substances 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 2
- 229910019029 PtCl4 Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 210000000349 chromosome Anatomy 0.000 description 2
- JBDSSBMEKXHSJF-UHFFFAOYSA-N cyclopentanecarboxylic acid Chemical compound OC(=O)C1CCCC1 JBDSSBMEKXHSJF-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 102000039446 nucleic acids Human genes 0.000 description 2
- 108020004707 nucleic acids Proteins 0.000 description 2
- 150000007523 nucleic acids Chemical class 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000003753 real-time PCR Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- YPSXFMHXRZAGTG-UHFFFAOYSA-N 4-methoxy-2-[2-(5-methoxy-2-nitrosophenyl)ethyl]-1-nitrosobenzene Chemical compound COC1=CC=C(N=O)C(CCC=2C(=CC=C(OC)C=2)N=O)=C1 YPSXFMHXRZAGTG-UHFFFAOYSA-N 0.000 description 1
- 229910017251 AsO4 Inorganic materials 0.000 description 1
- HEFNNWSXXWATRW-UHFFFAOYSA-N Ibuprofen Chemical compound CC(C)CC1=CC=C(C(C)C(O)=O)C=C1 HEFNNWSXXWATRW-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 108091028043 Nucleic acid sequence Proteins 0.000 description 1
- 229910021607 Silver chloride Inorganic materials 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008827 biological function Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- DQLATGHUWYMOKM-UHFFFAOYSA-L cisplatin Chemical compound N[Pt](N)(Cl)Cl DQLATGHUWYMOKM-UHFFFAOYSA-L 0.000 description 1
- 229960004316 cisplatin Drugs 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 150000004696 coordination complex Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 239000013612 plasmid Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000009758 senescence Effects 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000004614 tumor growth Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical group O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F15/00—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
- C07F15/0006—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table compounds of the platinum group
- C07F15/0086—Platinum compounds
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
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Abstract
The invention relates to a preparation method and application of polyaromatic hydrocarbon modified binuclear platinum (II) complex for targeted induction and stabilization of human telomere G-quadruplex, wherein the structural general formula is shown as formula (1):
in the formula (1), the reaction mixture is,
represents the same platinum complex with a side arm, and the platinum complex with a side arm is one of a formula (2), a formula (3) or a formula (4); the complexes can specifically target human telomere sequences, induce the human telomere sequences to form G-quadruplex structures, and stabilize the structures, wherein the melting point is stable and the temperature is as high as 34.2 +/-1.1 ℃; g-quadruplexesIs an important target molecule of potential anti-tumor drugs and is a hotspot for research of scientists at present; therefore, the complex is a potential antitumor drug taking human telomere G-quadruplex as a target.
Description
Technical Field
The invention relates to a preparation method and application of polyaromatic hydrocarbon modified binuclear platinum (II) complex which utilizes supermolecular self-assembly to synthesize human telomere G-quadruplex specific targeting, belonging to the field of biochemistry.
Background
Tumors are serious diseases threatening human health and life seriously, have become the second leading cause of human death, and are one of the major topics drawing attention worldwide in the 21 st century. Since 2009 nobel's prize for physiology or medicine awarded us of three scientists in the united states (elizabeth braekbook, carol grede and jack shaskack) who have a prominent contribution in the field of "how telomeres and telomerase protect chromosomes", people have come to recognize that telomeres are not only associated with structural features and stability of chromosomes, but also affect the life, senescence, death, etc. of cells. Research shows that the discovery of the structure of the nucleic acid G-quadruplex and the disclosure of the relation between the nucleic acid G-quadruplex and cancer by the current biological technology provide important targets for the research of the current anti-tumor drugs. The compound can induce DNA to form a G-quadruplex structure, is specifically combined and stabilized, and is expected to inhibit the growth of tumor cells, thereby achieving the anti-tumor effect. Therefore, the related structural features and biological functions of such nucleic acid secondary structures (G-quadruplexes) have attracted extensive attention from scientists in various fields.
As is well known, platinum antineoplastic drugs are the first-line anticancer drugs in clinical treatment, and the success of cisplatin and its derivatives in clinical treatment makes pharmaceutical companies and research institutions invest a lot of manpower, material resources and expenses to support the research of metal complexes as antineoplastic drugs. Meanwhile, the metal complex also has the advantages of simple synthesis steps, rigid-flexible geometric structure change, abundant electrochemical properties, and various performances such as optics, magnetism, catalysis and the like.
The bridged ligand is a series of nitrogen-containing heterocyclic structures with specific aromatic large pi planes, and the purpose of regulating and controlling the size and the rigid/flexible structure of the whole complex can be achieved by changing the substituent of the bridged ligand.
Disclosure of Invention
The invention aims to provide a polyaromatic hydrocarbon modified binuclear platinum (II) complex for target induction and stabilization of human telomere G-quadruplex, aiming at the defects of the prior art, and having a structure shown as a chemical formula (1):
in the formula (1), the reaction mixture is,
represents the same type of side-arm platinum (II) complex which is independently selected from formula (2), formula (3) or formula (4):
in the formula (1), the reaction mixture is,
represents the same substituent group, and the substituent groups are independently selected from formula (5), formula (6), formula (7) or formula (8):
the invention also provides a preparation method of the organic hybrid polyaromatic hydrocarbon modified binuclear platinum (II) complex, which is an organic hybrid polyaromatic hydrocarbon modified binuclear platinum (II) complex obtained by assembling a side arm platinum (II) complex and a bridging ligand into a binuclear structure by utilizing supermolecular self-assembly. The side arm platinum (II) complex is a side arm platinum (II) complex with chloride ions substituted by nitrate radicals or water molecules. The side-arm platinum (II) complex is one of a formula (2), a formula (3) or a formula (4). Said
Represents that the same substituent is one of formula (5), formula (6), formula (7) or formula (8).
The method specifically comprises the following reaction steps: dissolving the platinum (II) complex coordinated by the original chloride ion on a proper amount of DMF (dimethyl formamide), and adding AgNO3Ortho-chloride coordinated sidearm platinum (II) complexes with AgNO3The amount ratio of the substances is 0.9-1:1-1.1, the temperature is programmed to 60-150 ℃, and the reaction is carried out under the condition of N2And (4) reacting for 1-4 days in a dark place under protection, centrifuging by using a low-temperature centrifuge, discarding a precipitate, and keeping clear liquid. Adding bridging ligand into the clear liquid, the mass ratio of the side arm platinum (II) complex coordinated by the original chloride ion to the bridging ligand is 1-2:1, heating to 50-150 deg.C, and adding N2Reacting in dark for 2-6 days under protection, filtering the reaction solution with absorbent cotton after the reaction to obtain clear bright yellow solution (i.e. polyaryl modified binuclear platinum (II) complex solution), weighing excessive NH4PF6Adding into the above solution, adding NH4PF6The mass ratio of the double-core platinum (II) complex solution modified by polyaryl alkyl is 3-8:1, and a large amount of white precipitate appears immediately. Stirring at normal temperature and in dark place for about 20 min, filtering under reduced pressure, washing with glacial ethanol for 2-3 times, drying and centrifuging the obtained product in a vacuum drying oven to obtain light-colored solid matter, namely the polyaryl modified binuclear platinum (II) complex.
This reaction process can be represented by the following reaction formula:
the polyaryl modified binuclear platinum (II) complex provided by the invention can be used as a G-quadruplex stabilizer, and is a potential antitumor drug taking nucleic acid as a target.
The invention synthesizes organic hybrid polyaromatic hydrocarbon modified binuclear platinum (II) complex by a supermolecular self-assembly method, specifically targets human telomere (hTiel) sequence, induces the formation and stabilizes G-quadruplex, and can be used as a G-quadruplex stabilizer, namely a potential antitumor drug.
Compared with the prior art, the invention has the following beneficial effects:
the invention uses easily obtained K with rich sources2PtCl4The series of side arm platinum (II) complexes are synthesized as shown in formula (2), formula (3) or formula (4), and a series of polyaromatic hydrocarbon modified binuclear Pt (II) complexes are synthesized and characterized by a supermolecular self-assembly method with corresponding bridging ligands. Data obtained by FRET screening of human plasmid sequences (hTie), promoter region sequences (c-myc, c-kit and bcl2) and double-stranded (duplex) DNA indicate that the complexes all have excellent sequence selectivity.
Drawings
FIG. 1, FRET melting point curve of dinuclear platinum (II) complex interacting with human telomere sequence (hTel);
FIG. 2, FRET melting point curve for the interaction of binuclear platinum (II) complexes with the promoter region sequence (c-myc);
FIG. 3, FRET melting point curve of dinuclear platinum (II) complex interaction with promoter region sequence (c-kit);
FIG. 4, FRET melting point curve of dinuclear platinum (II) complex interaction with promoter region sequence (bcl 2);
FIG. 5 FRET melting point curves for the interaction of dinuclear platinum (II) complexes with double-stranded (duplex) DNA.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples.
Example 1
Synthesizing an organic hybrid polyaromatic hydrocarbon modified binuclear platinum (II) complex with a side arm platinum (II) complex formula (2) and a bridging ligand as a formula (5):
weighing a side-arm platinum complex formula (2) (92.2 mg, 0.2 mmol) coordinated by chloride ions, dissolving in 15 mL of DMF solvent, adding AgNO3（34 mg，0.2 mmol）N2Under the protection condition, the temperature is programmed to 100 ℃, the mixture is heated, protected from light and stirred for about 26 hours, the reaction solution after the reaction is finished is transferred to a high-rotation-speed low-temperature centrifuge (8000 turns, 4 ℃), and AgCl precipitate is removed by centrifugation. Transferring the clear light yellow liquid into a clean reaction bottle, weighing the bridged ligand (5) (47.2 mg, 0.1 mmol) and adding into the reaction system, heating to 120 ℃ by program heating for reaction for 72 h, and reacting with N2And (4) protecting, wherein the whole reaction process is carried out under the condition of keeping out of light. When the bridged ligand (5) completely disappears, the reaction is finished, the reaction is cooled to room temperature, absorbent cotton is used for filtration to obtain clear bright yellow solution (namely polyaryl modified binuclear platinum (II) complex solution), and excessive NH is weighed4PF6Adding into the above solution, adding NH4PF6The mass ratio of the double-core platinum (II) complex solution modified by polyaryl alkyl to the substance of the double-core platinum (II) complex solution is 3-8:1, a large amount of white precipitate appears immediately, the mixture is stirred for about 20 min at normal temperature in a dark place, the mixture is filtered under reduced pressure, the mixture is washed for 2 times by using glacial ethanol, and the obtained product is dried in a vacuum drying oven (0.12 g, 0.77 mmol) with the yield of 77%. Elemental analysis (%): c51H37F12N11O3P2Pt2H2O (theoretical, experimental): c (41.47, 41.02), H (2.95, 2.54), N (9.67, 9.94).
The structural formula of the synthesized organic hybrid polyaryl modified binuclear platinum (II) complex is shown as follows:
example 2
The binuclear platinum (II) complex synthesized in example 1 was used for selective screening experiments and results for different DNA sequences.
Fluorescence Resonance Energy Transfer (FRET):
1. preparing a buffer solution: 60 mM potassium arsenate (KH) was prepared2AsO4) pH =7.4 buffer solution.
2. Preparation of double-labeled DNA samples: double-labeled DNA was human telomer repeat hLabel, c-myc, c-kit, bcl2 and duplex, at concentrations determined by dilution according to the methods described in the commercially available protocols, and annealed at 400 nM in buffer.
3. The binuclear platinum (II) complex was prepared as a 3.0 mM stock solution as described above and diluted with buffer solution to the concentration required for the experiment.
4. Respectively mixing 12.5 mu L of 400 nM double-labeled DNA sample with 12.5 mu L of complex with different concentrations (2 × final concentration), transferring 20 mu L of the mixture into a Roche (LightCycler) PCR tube, standing for 1 hour, testing with a Roche real-time fluorescent quantitative PCR instrument (LightCycler 2 type fluorescent quantitative PCR instrument), fixing the excitation wavelength at 470 nM, correspondingly monitoring the emitted fluorescence intensity at 530 nM, changing the temperature range at 30-100 ℃, increasing the temperature at 1 ℃/min, balancing for 30s after increasing the temperature, sampling,T mthe values are given by the instrument with melting point analysis program; the data plots were obtained by treatment in Origin 8.0 (Origin labcorp.).
5. The above experiments were repeated and the final data are the average of three replicates.
TABLE 1 melting temperature (. DELTA.for binuclear platinum (II) complexes stabilizing different DNA sequencesT m) A change in (c).
As can be seen from the data in Table 1, the synthesized organic hybrid polyaromatic hydrocarbon modified binuclear platinum (II) complex can selectively target human telomere sequence (hTie) to induce the hTie to form G-quadruplex structure and corresponding deltaT mThe value was 34.2. + -. 1.1 ℃. In contrast, the binuclear platinum (II) complex has little stabilizing effect on the sequences of the promoter region (c-myc, c-kit and bcl2) and the double-stranded (duplex) sequence. Research reports that in tumor cells, telomerase activity is activated, and telomerase prolongs telomeres; telomeres in tumor cells are more prone to form G-quadruplex structures than in normal cells. Therefore, the binuclear platinum (II) complex has potential antitumor activity.
The invention uses easily obtained K with rich sources2PtCl4The series of side arm platinum (II) complexes are synthesized as shown in formula (2), formula (3) and formula (4), and a series of polyaromatic hydrocarbon modified binuclear Pt (II) complexes are synthesized and represented by a supermolecular self-assembly method with corresponding bridging ligands; through FRET screening of human telomere sequence (hTie), promoter region sequence (c-myc, c-kit and bcl2) and double-chain (duplex) DNA, obtained data show that the complexes have excellent sequence selectivity, namely, the complexes specifically target the human telomere sequence (hTie) and induce the human telomere sequence to form a G-quadruplex structure, so that the melting point of the complexes is stably increased by about 34.2 ℃; in contrast, such complexes have little stabilizing effect on promoter region sequences (c-myc, c-kit and bcl2) and on double-stranded (duplex) DNA; research reports that in tumor cells, telomerase activity is activated, and telomerase prolongs telomeres; telomeres in tumor cells are more likely to form G-quadruplex structures than in normal cells; therefore, the binuclear platinum (II) complex has potential antitumor activity.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.
Claims (10)
1. A polyaromatic hydrocarbon modified binuclear platinum (II) complex for target induction and stabilization of human telomere G-quadruplex is characterized by having a structure shown as a chemical formula (1):
2. the polyaromatic hydrocarbon modified dinuclear platinum (II) complex of claim 1, which can induce and stabilize human telomere G-quadruplex in a targeted manner, wherein:
in the formula (1), the reaction mixture is,
independently selected from formula (2), formula (3) or formula (4):
3. the polyaromatic hydrocarbon modified dinuclear platinum (II) complex of claim 1, which can induce and stabilize human telomere G-quadruplex in a targeted manner, wherein:
in the formula (1), the reaction mixture is,
independently selected from formula (5), formula (6), formula (7) or formula (8):
4. a method for preparing the polyaromatic hydrocarbon modified binuclear platinum (II) complex of any one of claims 1 to 3 for the targeted induction and stabilization of human telomere G-quadruplexes, comprising the following reaction steps: pendant platinum (II) complexes coordinating the original chloride ion and AgNO3Dechlorinating the reaction, and adding a bridging ligand to react to obtain the polyaryl modified binuclear platinum (II) complex.
5. The method of claim 4, wherein: the side arm platinum (II) complex coordinated by the original chloride ion and AgNO3The amount ratio of the substances of (a) is 0.9-1: 1-1.1.
6. The method of claim 4, wherein: the mass ratio of the side arm platinum (II) complex coordinated by the original chloride ion to the substance of the bridging ligand is 1-2: 1.
7. The method according to claim 4, wherein the dechlorination treatment comprises the following reaction steps: pendant platinum (II) complexes coordinating the original chloride ion and AgNO3Mixing, heating to 60-150 deg.C under N2And carrying out light-proof reaction for 1-4 days under protection.
8. The method according to claim 4, wherein the step of adding a bridging ligand to the reaction is as follows: adding bridging ligand, heating to 50-150 deg.C under N2And carrying out light-proof reaction for 2-6 days under protection.
9. The use of the polyaromatic hydrocarbon modified binuclear platinum (II) complex according to any one of claims 1-3 for targetedly inducing and stabilizing human telomere G-quadruplex in the preparation of antitumor drugs.
10. Use according to claim 9, characterized in that: the medicament contains pharmaceutically acceptable auxiliary agents.
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| CUI-XIA XU等: "V-Shaped Dinuclear Pt(II) Complexes: Selective Interaction with Human Telomeric G-quadruplex and Significant Inhibition towards Telomerase", 《SCIENTIFIC REPORTS》 * |
| MA DIK-LUNG等: "Platinum(II) Complexes with Dipyridophenazine Ligands as Human Telomerase Inhibitors and Luminescent Probes for G-Quadruplex DNA", 《JOURNAL OF THE AMERICAN CHEMICAL SOCIETY》 * |
| 郑小辉等: "G-四链体DNA稳定剂的研究进展", 《中国科学:化学》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113341128A (en) * | 2021-06-02 | 2021-09-03 | 江苏第二师范学院 | Biosensor for detecting tobramycin and detection method |
| CN113341128B (en) * | 2021-06-02 | 2023-05-16 | 江苏第二师范学院 | Biosensor and detection method for detecting tobramycin |
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